SN74AHCT157DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, low-power, 2-input multiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic gate with four independent 2-input multiplexers
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6ns (typical)
• Input Capacitance: 3pF (typical)
• Output Capacitance: 8pF (typical)

Detailed Pin Configuration

The SN74AHCT157DG4 has a total of 16 pins, which are assigned as follows:

1. A1: Input A1
2. B1: Input B1
3. Y1: Output Y1
4. G1: Enable Input G1
5. A2: Input A2
6. B2: Input B2
7. Y2: Output Y2
8. G2: Enable Input G2
9. VCC: Positive Power Supply
10. Y3: Output Y3
11. GND: Ground
12. B3: Input B3
13. A3: Input A3
14. Y4: Output Y4
15. G3: Enable Input G3
16. G4: Enable Input G4

Functional Features

• Four independent 2-input multiplexers in a single package
• Low power consumption
• High-speed operation
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - Compact design with multiple multiplexers in a single package - Low power consumption makes it suitable for battery-powered devices - High-speed operation allows for efficient data processing - Wide operating voltage range provides flexibility in various applications - Schmitt-trigger inputs ensure reliable performance in noisy environments

Disadvantages: - Limited number of inputs and outputs - May not be suitable for complex multiplexing tasks requiring more inputs

Working Principles

The SN74AHCT157DG4 is a 2-input multiplexer that selects one of the two input signals based on the control inputs. The four independent multiplexers within the IC can be controlled individually using the enable inputs. When the enable input is high, the corresponding multiplexer operates, and the selected input is passed to the output.

Detailed Application Field Plans

The SN74AHCT157DG4 is commonly used in various applications, including:

1. Data routing and selection in digital systems
2. Address decoding in memory systems
3. Signal switching in communication systems
4. Input selection in microcontrollers and microprocessors
5. Logic level conversion in mixed-signal circuits

Detailed and Complete Alternative Models

1. CD74HC157E: Similar 2-input multiplexer IC from Texas Instruments
2. MC74HC157AN: Equivalent 2-input multiplexer IC from ON Semiconductor
3. 74HCT157N: Alternative 2-input multiplexer IC from NXP Semiconductors
4. SN54HC157J: Comparable 2-input multiplexer IC from Texas Instruments

These alternative models offer similar functionality and can be used as substitutes for the SN74AHCT157DG4 in various applications.

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